I would really like some opinions on what you think is the problem with our system. We had a Water Furnace geothermal system installed last year-completed 8/08. It replaced our older oil furnace and air conditioner. Our oil furnace heated very well but it was very expensive.(in Jan and Feb we burned through 500 gal of oil a month.) We chose geothermal because of the reduced carbon footprint and the long term energy savings. The geothermal ststem has 3 zones- the living room is one zone, the kitche, dining and den the second zone, and the basement and bedrooms the third zone. It cooled well in the fall but our troubles began when the heat went on in late November. Our bills were sky high- $800 for electric. The company came out to check the system and determined that the outside electric temperature censor was broken so the electric over ride was always on. With this replaced, we had high bills for Dec and Jan also. The electric over ride seemed to go on any time the outside temperature was below 32 degrees. My husband disconnected the electric over ride so it would not go on. We were very cool inside but the cost of heating our home was too much. We did connect it for the coldest days but we have not been satisfied. We had the installer come back many times. He determined that we did not have enough insulation in the roof and this was why it stayed cold. We wanted to know why they did not advise us about this before we installed geothermal. By this time it was spring and we did not need heat. The system cooled our house great. Now it is winter. Once again we are having trouble. We had insulation installed to R60 and all the ducts in the attic were sealed, as well as the tops of the walls. The house was warm until the cold weather began. Even with the override, our bedroom and basement did not get warm. The installer came back and determined that the baffle for the bedrooms was not working. He has order a replacement. In the mean time, the bedroom zone is open and we are warm. But the upstairs bedrooms which are also on this zone are hot. Even with the electric override disconnected. When all the zones are at the correct temperature, the system did not shut off. We had to physically turn the system off because it was 84 degrees in the bedrooms. The outside air was in the 50's. Now we have really cold weather- in the 20's. The bedrooms are nice and warm, but the rest of the house is cool, it will not get above 64 degrees, and the colder it gets outside, the colder the downstairs gets. We are still waiting for the baffle to be replaced. I think that the thermostats for the living room and bedroom are not working properly. They are RF, so are not hard wired in. This may be some of the problem. In the winter when it is cold, the ground loop pipes are covered with frost, as is the round flow box it passes through. The installers have said to us that there is not enough heat in the ground for the winter because we did not run the air cool enough in the summer so the heat was not stored in the ground?? I really find this disturbing and question his abilities. I would really like some opinions on what you think is the problem. My feelings are that this system is not installed or set correctly. The company we chose is a certified Water Furnace Dealer. They have been around over 25 years and have a good reputation. We cannot understand why they can not get our system to work properly. The system cost a lot and so did the insulation. I would like to see some benefit for the money we paid.